Muffler.



PATENTED FEB. 28, 1905n MUFFLER.

APPLxoATIoN FILED Nov/214, 190s.

J. G. HEASLET.

/NI/ENTOR.

QM I W/TNESSES:

ATTORNEY.

UMTED STATES Patented February 2s, 1 s'. 5.

PATENT OFFICE.

JAMES Gr. HEASLET, PHILADELPHIA, PENNSYLVANIA, ASSIGNR TO HIMSELF AND HARRY M. HART, OF PHILADELPHIA, PENNSYLVANIA.

MUFFLEFL SPEGIIE'IGAELIQliT forming' part of LettersPatent No. 783,835, dated February 28, 1905,

` Application filed November 14, 1903. Serial No. 181,121.

'lo'll whom it may concern: i I.

Be it known that I, JAMES G. HEAsLE'r, aciti- Vzen of the United States of America, residing in the city andA county ofPhiladelphia, in the State of Pennsylvania, have invented a certain new and useful Improvement in M uliers, of which the followingis a true and exactdescription, reference being had to the accompanying drawings, which form a part thereof. 1o 'My invention relates to the construction of mufiiers such as are used to diminish the noise of gas escaping from the exhaust of explosive and other engines, the object ofmy invention being to provide a muiiler of simple and efiicient construction, the nature of which xwill be best understood as described in connection with the drawings, in which it is illustrated, and inwhich Figure l is a longitudinal sectional view of zo the mutlier in what l believe to be its best form of construction; Fig. 2, a cross-section through the upper' half of the muiiler, taken on the line 2 2.of Fig. 1 and Fig. 3, a cross-section through v the lower halfl of the muiiier on the line 3 3 of Fig. 1. 1

A indicates the exhaustconduit leading from the engine and, as shown, coupled'to a head B of the muier, which in this construction is shown as provided with perforations,

3o (indicated at 6.)' Also coupled with the head B and s'o as to form an extension, in effect, of the conduit A is the tube C, which .in this construction acts bothas a conduit and as a, central bpdy for the muier, the said tube having at itsrear end perforations 'C' C2, through which the gases esape into the muiiler-chamber proper, and this real`- end of the tube C is also secured tothe rear head D of the muiier. Secured to the tubular body C are a series of 40 plates vE E' VE2 F F' F2, &c., of alternately the larger and smaller area, both sets of platesbeing .formed with transverse perforations, as indicated at f and e, thoseof the larger plate being set out at e and being set at the outer 4-5 edges of the plates, so as to be out of registry with the smaller edges of plates f. G G, &c.,

are the outer covering-plates making up the shell of the muiiier, said plates uniting the edges of the plates E and F, and having as a Whole a corrugated form. 5o

In operation the exhaust-gases in the pipe A pass through the -head B into the pipe C and thence through the perforations C and C2 into the rear chambers formed between the plate E5 and the head D on one side and the l55 plate Fit on the other side. The gases then pass l. forward over the body C, passing alternately out to the perforation through theperforations e and in again through the perforations f until they reach the head B, from which they 6^ escape through the holes b.

It will be readily seen that my mufiier embodies for breaking lup the issuing force of the exhaust-gases both in the in and out motion which lthe gases are compelled totake and in their` constant passage through relatively small orifices into comparatively large chambers. It will also be recognized that my muiier also provides a large cooling-surface, which largely r`extracts the heat of the gases 70 and diminishes their consequent velocity, so that the gases-will issue from the head B cooled and Without suilicent impetus to create objec` tionable noise.

' Having now described my invention, what 75 I claim as new, and desire to secure'by Letters Patent, is

1.. A muiiiler having in combination a cen,- tral cylindrical body, a series ot' alternatelyplaced plates of large and relatively small area 8O secured around the central body and formed rwith transverse perforations, those of the larger plates being near their outer edges only,

' an outer shell uniting the edges of the larger and smaller perforated platesandhavingagen- 'erally-corrugated form, anv inlet for gas or vapor at one end of the muie'r and an outlet at the other end. l

2. A muiiier having in combination a central tube,open at one end to receive the gas 9G or vapor to be muiied and at the other to give passage for the same to the muiiie-chamber, a

series of alternately-placed plates of large amill outlet for the gases situated at the opposite relatively small area secured around the eenend 0`f the Inutile-chamber to .that which retral tube, and formed With transverse perforaeeives the same.

tions, those ofthe larger plates being near their JAMES G, HEASLET.

outer edges, au outer shell limiting the edges Witnesses: of the larger and smaller perforated plates and GEO. G. WHITCOMB, having a generally-corrugated form, and an HART O. BERG. 

